“Sober-minded” translates a term that describes moderation in the drinking of an alcoholic beverage. Its figurative extension in this verse means to be free from every form of mental and spiritual drunkenness—to be free from excess, passion, rashness, or confusion. It’s a call to be “restrained in conduct, self-controlled, level-headed” (BDAG).
“Dignified” describes a person who is worthy of respect and honor. It is a person who is noble, dignified, and serious (BDAG). The dignified person is so self-possessed and in control of his temper and fears that he elicits admiration from those who know him.
“Self-controlled” indicates someone who is thoughtful and in control of their passions. In Aristotle’s ethics, the term describes someone who avoids extremes and who gives careful consideration for responsible action (Aristot., EN 3, 15; BDAG). For Aristotle, the “self-controlled” person “is intent on the what, the how, and the when of doing what should be done.”
“Sound” literally means to be “healthy” or free from sickness. The extension of that meaning here means to be free from error. So “sound” in faith, love, and endurance means that older men have to believe in the right way, love in the right way, and endure in the right way.
